//
//  Student.h
//  KVO
//
//  Created by 徐凯 on 2018/12/30.
//  Copyright © 2018 徐凯. All rights reserved.
//

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface Student : NSObject
@property(nonatomic,assign) NSInteger stu_id;
@property(nonatomic,strong) NSString* name;
@property(nonatomic,assign) NSInteger age;

@end

NS_ASSUME_NONNULL_END
